Improvement in machinery for finishing leather



UNTTED ,STATES AAGrUS-'IUS M, L. GROFF AND JOHN -PATENT OFFICE.

A. MARVEL, or WILMINGTON. DEL.

` IMPROVEMENT IN MACHI-NERY FCR FINISHI'NG LEATHER.

lvSpecication forming part of Letters Patent No. 159,092, dat-ed January 26,1875; application led November 7,' 1874.

reference beinghad to 'the annexed drawings, making a part of' this specitication, and" te' theelettersandi-gures of reference marked thereon. t A `Figure 1 of the drawing is afrepres'entation -of a-side view of our` leather-finishing ina-A tionalviewofrthe same. Fig.'3 is-a plan view.

Eig., iris ai sverseseetioualsview' -of the saine;`

This I invention has relation to machines which; are designedl for pebbling, graining, ,and softening morocco and al1 other kinds of leather; and it consists in an oscillating4 semicylindriealrubber, which also receives a rectilnear reciprocating motion bodily`,fin vcombi- "n'ation .witlitan l adjustable table, which' is arrangedbeneath this rubber and adapted for '..receiving the leather which is tobetreated,- as will bemunderstood from the following de' scrxption.

'fIn the. annexed drawings, A designates the frame of the machine, andV B the-'table on -.which the leather vto be treatedis applied. This table is hinged at a to the frame A, `and connected by its -free en'd to a treadle, C, by ni'eans of yrods b, so that the attendant" can fraise-.the table' Withthe work on it, and apply any desiredjpressuraand vary the-...pressure as the nature of the work requires. 4D -desigf nates asnli-cylindrical rubber, which is properly covered, andwhich is constructed with hollowheads c" c, containing shot or other movable weights. This rubber D is madefast on a horizontal shaft;rE,whih pla-ysbetwee r. ,guideways d, secured in the namen tit-right 4 plays between the guideways'itisannularly groove'd forpreventing endwise playof this are applied loosely on the shaft E, and which engage W ith racks e e, on the outer sides of the their peripheries, and which are keyed on the shaftE outside of the wheels F F. M-y object is to communicate a partial rotary mov-ing over the table in the direction indicated vby the arrow in Fig. 1, then to turn the rubber overf during-the return stroke, and

:"bring its convexside into play again for another workin g stroke.

This I do 'by pivoting to the -faces of the wheels F pawls g g, which engage With the two shoulders f on the plates G, and turn the rubber over while it is making of thepawls g' act, which causes it to turn in the direction indicated by thearrow in' Fig. 2. The rubber receives a reciprocating motion backward and forward over the table B, by means of pitman-rodsJ J, Wheels J'` J', and a shaft, K, which Alatter receives pinion ona shaft, L.

What we claim asnew, and desire to secure by Letters Patent, is-

l. In 'a machine for pebbling, graining, and softening leather, the semi-cylindrical rotary rubber, D, having Yan oscilla-ting rectilinear and reciprocating motion, in combination with an 'adjustable table, B, which is arranged be- `.Heath said rubber, substantially as and for the purpose set forth.

2; The semi-cylindrical rubber D, the axis of which is provided with cog-wheelsF F andnotched cams G G, in combination with the racks ee, pa'wls vg g,v wheels 'J'.J, and pitman; 'J J substantially as and forthe purpose set'. forth. y

In testimony that we claim the above we haye of two witnesses.

AUeUsTUs. M.vv Gnorr. l JOHN A. MARVEL.

Witnesses: n

' CRAs. E'. FRITZ,

JAcKsoNJoNEs.

frame A. G G designate cam-shaped platesI n which are constructed with shoulders f on 'motion to the semi-cylindrical rubber D,` While "its back stroke to the front of thetable. Dur-- g'thefforward strokesof the rubber only-anem motion-from al hereunto subscribed our names in the-presence 

